Nut-lock



W. s GLYMER.

- NUT LOCK.

No. 314,112. Patented Mar. 17, 1885.

WITNESSES IN'VENTGR ATTORNEYS.

UNITED STATES TENT NUT-LOCK.

' SPECIFICATION forming part of Letters Patent No. 314,112, dated IMarch 17, 1885.

Application filed May 29, 1894. (No model.)

T 0 all whom, it may concern:

Be it known that I, WILLIAM S. CLYMER, a citizen of the United States, residing at VVesterville, in the county of Franklin and State of Ohio, have invented certain new and useful Improvements in Nut-Locks, of which the following is a description.

Thisinvention relates to that class of devices used to prevent screw-nuts from working loose from the bolts on which they are used; and its object is to secure a nut positively from turning backward, to adjust the locking parts closely, and to secure them at different points in a revolution. and to secure the locking parts from being lost.

To this end my invention consists in the construction and combination of parts forming a nutlock, hereinafter described and claimed, reference being had to the accompanying drawings, in which- Figure 1 is a plan View of my invention. Fig. 2 is an end view, and Fig. 3 is a plan view, of a modification thereof; and Fig. 4 is a longitudinal section of the principal device.

A represents a screw bolt having a longitudinal slot, 0.

B is a screw-nut fitting the bolt and countersunk in its outer face at b, Fig. 4.

G is a common washer.

D is the lock-nut, threaded to fit the bolt, and provided with a number of grooves, f, across its inner face, just outside of a line tangent to the screw.

E is a key fitting the slot 0, in the bolt and projecting beyond the circumference thereof.

(Z represents a series of slots in the lock-nut D, either one of which will register with the slot 0, and will permit the key E to pass through it.

ThekeyE is provided with a series of trans verse notches, e, an y one of which may register with any one of the grooves f,- and F is awire, tapered to be driven through agroove, f, and through a notch, 6, when the nut D is screwed home against the nut B and thekey is seated.

In use, the nut Bis first screwed home, then the lock-nut D is screwed against it by straining on it with the wrench a little more or little less, as may be required to register a slot in the nut with the slot in the bolt. Insert the key in place, then drive the wire across through it, and bend the ends of the wire.

The countersink 1) receives the end of the key 7 far enough to register a notch, 6, with a groove.

f. The lock-nut stops the main nut, the key stops the loclcnut, the wire stops the key, and

the bends in the wire stop it from removal. In course of time the wire might work loose enough to pass its large end through its groove and be lost, so I recommend bending both 6.

ends.

To remove the nut it is only necessary to first straighten the small end of the wire, then each part may be in its turn removed. 7

The countersink in the main nut B is to ad 6 init the end of the key enough to bring a notch in register with a groove in the checlenut.

By this method of fastening nuts neither the nut or bolt is in any way bruised or dainaged by any number of applications and re movals of the lock, and as soft wires are used,even they may be bent and straightened for an indefinite number of applications.

The modification shown in Fig. 3 consists." in a slotted washer, G,-provided with a groove, 7

f. This is a mere transposition of the groove from the check nut to the washer, the wire being used in the same manner in either case. In this latter case the nut does not require a groove, f; 8

screw-bolt, provided with slots to register with the slot in the bolt and to receive the key, and provided with grooves across its face and across its slots tangent to the bolt hole, 9 and a wire adapted to tit closely in the said grooves and at the same time to rest in a notch of the said key, substantihlly as shown and described.

WM. S. OLYMER.

Witnesses:

J. R. STEPHENS, Jr, J. W. WHEELER. 

